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Finding the Fourth Proportional to 525,101.60, 787,846.80 and 505,661.60

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Solution

The fourth proportional to 525,101.60, 787,846.80 and 505,661.60 is: 758,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,101.60 : 787,846.80 = 505,661.60 : x
  2. Step 2: Convert to fraction form
    525,101.60/787,846.80 = 505,661.60/x
  3. Step 3: Cross multiply
    525,101.60x = 787,846.80 × 505,661.60
  4. Step 4: Simplify right side
    525,101.60x = 398,383,873,442.88
  5. Step 5: Solve for x
    x = 398,383,873,442.88/525,101.60
  6. Step 6: Final answer
    x = 758,679.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.